Portable material surface air permeability automatic tester and testing method

A measurement method and gas permeability technology, which is applied in the fields of analysis of materials, permeability/surface area analysis, suspension and porous material analysis, etc. It can solve the problems of not easy to carry, on-site installation, complicated preparation work, low test efficiency, etc., and achieve automation High degree, reduced dependence, high precision effect

Active Publication Date: 2021-03-19
TSINGHUA UNIV
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Problems solved by technology

[0002] At present, the surface gas permeability test devices of concrete materials or stone materials are generally relatively large, not easy to carry and install on site, and additional anchoring measures are required on the surface of the test material, resulting in complicated test preparations
On the other hand, the testing process generally takes more than 10 minutes, plus the anchoring time, most of the single measurement points take more than 20 minutes, and the test efficiency is low

Method used

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  • Portable material surface air permeability automatic tester and testing method
  • Portable material surface air permeability automatic tester and testing method
  • Portable material surface air permeability automatic tester and testing method

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Embodiment Construction

[0031] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of example embodiments. communicated to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0032] Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted. It should be noted that in the present disclosure, the terms "comprising", "configured with", and "disposed at" are used to express an open and inclusive meaning, and...

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Abstract

The invention provides a portable material surface air permeability automatic tester which comprises an air transmission unit, a control unit, a calculation unit and a contact, and is characterized inthat the air transmission unit is used for transmitting air outside the tester to the contact through an air inlet motor, and then the air penetrates into the surface of a tested material; the control unit is used for controlling the rotating speed of the air inlet motor, so that air stably penetrates into the surface of the measured material under preset pressure; the calculation unit is used for calculating the air permeability of the measured material according to parameters such as the flow rate of gas penetrating into the surface of the measured material and air viscosity. The tester canbe used for conveniently, quickly and accurately measuring the air permeability of the surface of the material.

Description

technical field [0001] The invention relates to the technical field of measuring material surface air permeability, in particular to a portable automatic measuring instrument and a measuring method for material surface air permeability. Background technique [0002] At present, the surface gas permeability test devices of concrete materials or stone materials are generally relatively large, not easy to carry and install on site, and additional anchoring measures are required on the surface of the test material, resulting in complicated test preparations. On the other hand, the testing process generally takes more than 10 minutes, plus the anchoring time, most of the single measurement points take more than 20 minutes, and the testing efficiency is low. Therefore, there is a need for a gas permeability testing device that is light, portable, easy to install and operate, and performs rapid and accurate testing. Contents of the invention [0003] The present invention is mad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08
CPCG01N15/0826
Inventor 王俊杰李克非
Owner TSINGHUA UNIV
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